Antioxidants,
Journal Year:
2023,
Volume and Issue:
12(3), P. 647 - 647
Published: March 5, 2023
Cystathionine
β-synthase
(CBS),
CSE
(cystathionine
γ-lyase)
and
3-mercaptopyruvate
sulfurtransferase
(3-MST)
have
emerged
as
three
significant
sources
of
hydrogen
sulfide
(H2S)
in
various
forms
mammalian
cancer.
Here,
we
investigated
the
functional
role
CBS’
3-MST’s
catalytic
activity
murine
breast
cancer
cell
line
EO771.
The
CBS/CSE
inhibitor
aminooxyacetic
acid
(AOAA)
3-MST
2-[(4-hydroxy-6-methylpyrimidin-2-yl)sulfanyl]-1-(naphthalen-1-yl)ethan-1-one
(HMPSNE)
were
used
to
assess
endogenous
H2S
modulation
proliferation,
migration,
bioenergetics
viability
vitro.
Methods
included
measurements
(MTT
LDH
assays),
proliferation
vitro
wound
healing
(IncuCyte)
cellular
(Seahorse
extracellular
flux
analysis).
CBS
3-MST,
well
expression
detected
by
Western
blotting;
production
was
measured
fluorescent
dye
AzMC.
results
show
that
EO771
cells
express
CBS,
protein,
several
enzymes
involved
degradation
(SQR,
TST,
ETHE1).
Pharmacological
inhibition
or
inhibited
production,
suppressed
attenuated
proliferation.
Cell
migration
only
inhibitor,
but
not
inhibitor.
Inhibition
did
significantly
affect
basal
viability;
(but
CBS/CSE)
slightly
enhanced
cytotoxic
effects
oxidative
stress
(hydrogen
peroxide
challenge).
From
these
findings,
conclude
H2S,
generated
a
lower
degree
CBS/CSE,
contributes
maintenance
bioenergetics,
may
also
exert
minor
cytoprotectant.
Cancer Cell International,
Journal Year:
2024,
Volume and Issue:
24(1)
Published: April 16, 2024
Abstract
Background
Hydrogen
sulfide
(H
2
S)
is
a
significant
endogenous
mediator
that
has
been
implicated
in
the
progression
of
various
forms
cancer
including
breast
(BC).
Cystathionine-β-synthase
(CBS),
cystathionine-γ-lyase
(CSE),
and
3-mercaptopyruvate
sulfurtransferase
(3MST)
are
three
principal
mammalian
enzymes
responsible
for
H
S
production.
Overexpression
CBS,
CSE
3MST
was
found
to
be
associated
with
poor
prognosis
BC
patients.
Moreover,
linked
an
immune-suppressive
tumor
microenvironment
BC.
Recently
it
observed
cells,
response
single
or
dual
inhibition
synthesizing
enzymes,
develop
escape
mechanism
by
overexpressing
alternative
sources
generation.
Thus,
aim
this
work
compensatory
pan
repressing
using
microRNAs
(miRNAs)
investigate
their
impact
on
oncogenic
immunogenic
profile
cells.
Methods
female
patients
(
n
=
25)
were
recruited.
In-silico
analysis
used
identify
miRNAs
targeting
CSE,
3MST.
MDA-MB-231
cells
cultured
transfected
oligonucleotides.
Total
RNA
extracted
Biazol,
reverse
transcribed
quantified
qRT-PCR.
levels
measured
AzMc
assay.
hallmarks
assessed
trans-well
migration,
wound
healing,
MTT,
colony
forming
assays.
Results
miR-193a
miR-548c
validated
eight
different
bioinformatics
software
simultaneously
target
MiR-193a
significantly
downregulated
tissues
compared
non-cancerous
counterparts.
Ectopic
expression
TNBC
resulted
marked
repression
transcript
protein
levels,
decrease
reduction
cellular
viability,
migration
ability,
immune-suppressor
proteins
GAL3
GAL9,
CD155
upregulation
immunostimulatory
MICA
MICB
proteins.
Conclusion
This
study
sheds
light
onto
as
potential
pan-repressors
enzymes.
identifies
them
novel
suppressor
immunomodulatory
TNBC.
Biomolecules,
Journal Year:
2023,
Volume and Issue:
13(7), P. 1023 - 1023
Published: June 21, 2023
Hydrogen
sulfide
(H2S)
is
an
endogenous
gasotransmitter
that
promotes
multiple
biological
effects
in
many
organs
and
tissues.
An
imbalanced
biosynthesis
of
H2S
has
been
observed
animal
models
age-related
pathological
conditions.
However,
the
results
from
human
studies
are
inconsistent.
We
performed
a
systematic
review
with
meta-analysis
searched
Medline,
Embase,
Scopus,
CENTRAL
databases.
included
observational
on
patients
diseases
showing
levels
blood,
plasma,
or
serum.
All
analyses
were
carried
out
R
software.
31
21
meta-analysis.
The
circulating
significantly
reduced
progressive,
chronic,
degenerative
compared
healthy
people
(standardized
mean
difference,
SMD:
−1.25;
95%
confidence
interval,
CI:
−1.98;
−0.52).
When
we
stratified
by
type
disorder,
significant
reduction
vascular
disease
(e.g.,
hypertension)
(SMD:
−1.32;
−2.43;
−0.22)
kidney
−2.24;
−4.40;
−0.08)
control
group.
These
could
support
potential
use
compounds
targeting
“H2S
system”
to
slow
down
progression
elderly.
Cancers,
Journal Year:
2023,
Volume and Issue:
15(15), P. 3836 - 3836
Published: July 28, 2023
Cancer
is
an
impending
bottleneck
in
the
advanced
scientific
workflow
to
achieve
diagnostic,
prognostic,
and
therapeutic
success.
Most
cancers
are
refractory
conventional
diagnostic
chemotherapeutics
due
their
limited
targetability,
specificity,
solubility,
side
effects.
The
inherent
ability
of
each
cancer
evolve
through
various
genetic
epigenetic
transformations
metabolic
reprogramming
underlies
limitations.
Though
tumor
microenvironments
(TMEs)
quite
well
understood
some
cancers,
microenvironment
differs
from
other
internal
perturbations
skew
thereby
impeding
development
appropriate
diagnostics,
drugs,
vaccines,
therapies.
associated
bioenergetics
modulations
regulate
TME,
angiogenesis,
immune
evasion,
generation
resistant
niches
progression,
a
thorough
understanding
crucial
However,
this
remains
missing
element
theranostics,
necessitating
modalities
that
can
be
adapted
for
diagnostics
therapeutics.
In
challenging
scenario,
nanomaterials
modular
platforms
TME
achieving
successful
theranostics.
Several
nanoscale
particles
have
been
successfully
researched
animal
models,
few
reached
clinical
trials,
achieved
Nanoparticles
exhibit
intrinsic
capability
interact
with
diverse
biomolecules
modulate
functions.
Furthermore,
nanoparticles
functionalized
receptors,
modulators,
drugs
facilitate
specific
targeting
reduced
toxicity.
This
review
discusses
current
different
theranostic
nanosystems,
synthesis,
functionalization,
targetability
modulation
bioenergetics,
microenvironment.
We
highlight
potential
nanosystems
enhanced
chemotherapeutic
success
emphasizing
questions
remain
unanswered.
Biomolecules,
Journal Year:
2024,
Volume and Issue:
14(7), P. 746 - 746
Published: June 24, 2024
Leukemias
are
cancers
of
the
blood-forming
system,
representing
a
significant
challenge
in
medical
science.
The
development
leukemia
cells
involves
substantial
disturbances
within
cellular
machinery,
offering
hope
search
for
effective
selective
treatments
that
could
improve
5-year
survival
rate.
Consequently,
pathophysiological
processes
focus
critical
research.
Enzymes
such
as
cystathionine
beta-synthase
and
sulfurtransferases
like
thiosulfate
sulfurtransferase,
3-mercaptopyruvate
gamma-lyase
play
vital
role
sulfur
metabolism.
These
enzymes
essential
to
maintaining
homeostasis,
providing
robust
antioxidant
defenses,
supporting
cell
division.
Numerous
studies
have
demonstrated
cancerous
can
alter
expression
activity
these
enzymes,
uncovering
potential
vulnerabilities
or
molecular
targets
cancer
therapy.
Recent
laboratory
research
has
indicated
certain
lines
may
exhibit
changes
patterns
enzymes.
Analysis
scientific
literature
online
datasets
confirmed
variations
enzyme
function
specific
leukemic
compared
normal
leukocytes.
This
comprehensive
review
collects
analyzes
available
information
on
lines,
valuable
insights
identifying
new
pathways
this
field.
Biomedicines,
Journal Year:
2024,
Volume and Issue:
12(9), P. 1951 - 1951
Published: Aug. 26, 2024
Atherosclerosis
is
a
chronic
inflammatory
condition
marked
by
endothelial
dysfunction,
lipid
accumulation,
cell
infiltration,
and
extracellular
matrix
(ECM)
remodeling
within
arterial
walls,
leading
to
plaque
formation
potential
cardiovascular
events.
Key
players
in
ECM
inflammation
are
metalloproteinases
(MMPs)
CD147/EMMPRIN,
surface
glycoprotein
expressed
on
cells,
vascular
smooth
muscle
cells
(VSMCs),
immune
that
regulates
MMP
activity.
Hydrogen
sulfide
(H₂S),
gaseous
signaling
molecule,
has
emerged
as
significant
modulator
of
these
processes
including
oxidative
stress
mitigation,
reduction,
remodeling.
This
systematic
review
investigates
the
mechanistic
pathways
through
which
H₂S
influences
MMPs
CD147/EMMPRIN
assesses
its
impact
atherosclerosis
progression.
A
comprehensive
literature
search
was
conducted
across
PubMed,
Scopus,
Web
Science
databases,
focusing
studies
examining
modulation
contexts.
Findings
indicate
modulates
expression
activity
transcriptional
regulation
post-translational
modifications,
S-sulfhydration.
By
mitigating
stress,
reduces
activation,
contributing
stability
also
downregulates
via
pathways,
diminishing
responses
cellular
proliferation
plaques.
The
dual
regulatory
role
inhibiting
downregulating
CD147
suggests
therapeutic
agent
stabilizing
atherosclerotic
plaques
inflammation.
Further
research
warranted
elucidate
precise
molecular
mechanisms
explore
H₂S-based
therapies
for
clinical
application
atherosclerosis.
Antioxidants,
Journal Year:
2022,
Volume and Issue:
11(9), P. 1823 - 1823
Published: Sept. 15, 2022
Recently,
a
CRISPR-Cas9
genome-editing
system
was
developed
with
introduced
sequential
'driver'
mutations
in
the
WNT,
MAPK,
TGF-β,
TP53
and
PI3K
pathways
into
organoids
derived
from
normal
human
intestinal
epithelial
cells.
Prior
studies
have
demonstrated
that
isogenic
harboring
tumor
suppressor
genes
APC,
SMAD4
TP53,
as
well
oncogene
KRAS,
assumed
more
proliferative
invasive
properties
vitro
vivo.
A
separate
body
of
implicates
role
various
hydrogen
sulfide
(H2S)-producing
enzymes
pathogenesis
colon
cancer.
The
current
study
designed
to
determine
if
above
pathway
affect
expression
H2S
producing
enzymes.
Western
blotting
used
detect
H2S-producing
cystathionine
β-synthase
(CBS),
γ-lyase
(CSE)
3-mercaptopyruvate
sulfurtransferase
(3-MST),
several
key
involved
degradation
such
thiosulfate
sulfurtransferase/rhodanese
(TST),
ethylmalonic
encephalopathy
1
protein/persulfide
dioxygenase
(ETHE1)
sulfide-quinone
oxidoreductase
(SQR).
levels
were
detected
by
live-cell
imaging
using
fluorescent
probe.
Bioenergetic
parameters
assessed
Extracellular
Flux
Analysis;
markers
epithelial-mesenchymal
transition
(EMT)
blotting.
results
show
consecutive
produced
gradual
upregulations
CBS
expression-in
particular
its
truncated
(45
kDa)
form-as
CSE
3-MST
expression.
In
advanced
organoids,
when
upregulation
coincided
downregulation
H2S-degrading
enzyme
SQR,
increased
generation
also
detected.
This
effect
cellular
bioenergetics
(mitochondrial
respiration
and/or
glycolysis)
an
Wnt/β-catenin
pathway,
effector
EMT.
Thus
cells
according
Vogelstein
sequence
are
associated
multiple
generating
pathways,
which,
turn,
translates
functional
changes
dedifferentiation,
aggressive
cancer
phenotypes.
Current Opinion in Chemical Biology,
Journal Year:
2024,
Volume and Issue:
79, P. 102440 - 102440
Published: Feb. 28, 2024
Rewiring
the
transsulfuration
pathway
is
recognized
as
a
rapid
adaptive
metabolic
response
to
environmental
conditions
in
cancer
cells
support
their
increased
cysteine
demand
and
produce
Reactive
Sulfur
Species
(RSS)
including
hydrogen
sulfide
(H
International Journal of Molecular Sciences,
Journal Year:
2025,
Volume and Issue:
26(2), P. 776 - 776
Published: Jan. 17, 2025
Prostate
cancer
is
one
of
the
most
common
malignancies
affecting
men
worldwide
and
a
leading
cause
cancer-related
mortality,
necessitating
deeper
understanding
its
underlying
biochemical
pathways.
Similar
to
other
types,
prostate
also
characterised
by
aberrantly
activated
metabolic
pathways
that
support
tumour
development,
such
as
amino
acid
metabolism,
which
involved
in
modulating
key
physiological
pathological
cellular
processes
during
progression
this
disease.
The
metabolism
several
acids,
glutamine
methionine,
crucial
for
tumorigenesis,
dysregulated
commonly
discussed
cancer.
And
roles
some
less
studied
histidine
glycine,
have
been
covered
studies.
Aberrant
regulation
two
major
signalling
pathways,
mechanistic
target
rapamycin
(mTOR)
general
control
non-depressible
2
(GCN2),
driver
reshaping
landscape
By
summarising
our
current
how
modulated
cancer,
here,
we
provide
further
insights
into
certain
potential
therapeutic
targets
managing
through
interventions.